>The de-emphasis in mpeg audio is only a flag to indicate if emphasis was
>applied on hte source or not, in order to compensate it in the decoder.
>There is nothing to do about it in the encoder, except positionning the
>flag.
>
>The 2 emphasis types are some kind of boost of high frequencies, in order to
>keep a better bandwidth on some analog medias. Those kind of things are used
>(with some changes) in Dolby B/C NR, as an example.
This was also used with CDs because of low quality DACs and filters in
the beginning of the CD era.
AFAIK.
>But those 2 emphasis (C/5) are now obsolete for a lot of years. This flag
>was removed in AAC and mpeg-4.
>
>
>I was just going to ask Mark to remove this switch as it is totally
>obsolete.
Unless you deal with pre-emphasised material ...
--
David Balazic , student
E-mail : [EMAIL PROTECTED] | living in sLOVEnija
home page: http://surf.to/stein
Computer: Amiga 1200 + Quantum LPS-340AT
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